The USDZ file format is a zipped and uncompressed archive format developed by Pixar and Apple for storing 3D models and scenes. It is designed for efficient sharing and viewing of 3D content, particularly in augmented reality (AR) applications. USDZ files are based on the Universal Scene Description (USD) framework, which provides a robust and extensible system for describing 3D scenes with complex hierarchies, animations, and materials. The zipped nature of USDZ allows for faster loading and streaming of 3D assets, making it ideal for mobile devices and web-based AR experiences. USDZ is often used for product visualization, e-commerce, and interactive storytelling. The format supports physically based rendering (PBR) materials, ensuring realistic and visually appealing rendering of 3D objects. It is also designed to be easily integrated into existing workflows and pipelines, making it a popular choice for 3D artists and developers. The format is optimized for quick look previews on Apple devices, allowing users to view 3D models directly in the file system or within applications like Safari and Messages without needing to open a dedicated 3D viewer.